TECHNOLOGYACTIVE
1 hour ago
Ancient rocks reveal when Earth's tectonic engine 'switched on'
What's happening
SignalsMonitor is following this as a technology story. Phys.org Breaking News is the outlet attached so far. The first report grouped here was at 11 Nov 2026, 00:10 UTC. The headline in use is “Ancient rocks reveal when Earth's tectonic engine 'switched on'”. This note is SignalsMonitor's own briefing, not the publisher's article.
What we know
Scientists have identified a major turning point in Earth's geological history, when the processes shaping the planet's crust changed dramatically and began to resemble the plate tectonics we see today—about 2. 5 billion years ago.
Phys.org Breaking NewsRead at Phys.org Breaking News
Story timeline
Reports grouped into this story, earliest first. Exact repeats from the same outlet are collapsed.
- First reported by Phys.org Breaking News
Ancient rocks reveal when Earth's tectonic engine 'switched on'
Reported by 1 outlet
- Phys.org Breaking News
- Phys.org Breaking NewsAncient rocks reveal when Earth's tectonic engine 'switched on'